Engine-lubricator.



A. G. COOPER.

ENGINf LUBRICATOR. l APPLICATION msn MAR, 27. |914.

Patented Oct. 26, 1915.

3 sHEETs-sHEET l.

A. G. COOPER. y

' ENGINE LumcAToR.

APPLICATION FILED MAR. 27, |914.

1,158,121. Patentes 00E 26, 1915.

@SHEETS-SHEET 2.

ATT?

A. G. COOPER.

ENGINE LUBRICATOR.

APPucATIoN man MAR. 27. 1914.

Patented Oct. 26, 1915\ 3 SHEETS-SHEET 3.

L @@fm/ 5%?? 977% Mad/cd ,ATTM

pipes may be kept under observation. The construction oi' thc oil checkvalve 1s such that the steam pressure 1s balanced agauist its two sides.rThe valve is kept on its seat and Fig. 4 is by spring pressure, meansbeing provided for varying this pressure so that the spring will at alltimes maintain a pressure tending to keep the valve closed against thehead of oil being fed to it. The head pressure of the oil is greaterthan the maximum steam pressure and the valve loading is intermediate ofthese two pressures. The oil pressure is therefore operative to open thevalve against thespring to admit oil to the cylinder or other enginepart. The operation of the valve is therefore independent of the steampressure and the valve consequently operates to deliver lubricantwhether the engine is running light or on heavy load and the oil servicepipes rearward of the check valves are always retained full of oil underfull head of pressure, the measure of oil feed being determined by theoverplus of headpresf sure applied to the oil in excess of the-,springloading on the check valve. 1

In the accompanying drawings, Figurel' u l upper head 'is fitted withrings S to prevent is a semi-diagrammatic view of a lubricatl ing systemaccording to my invention ap'wv plied to a locomotive cylinder; Fig. isa fragmentary plan view showing the checkj` valves in connectiontherewith; Fig. an external view of one of the check valv a verticalsection therethrough Fig. 5 is a sectional elevation of the sigh feedmanifold; and Fig. 6 is a transverse,l section through same; Fig. 7 is asectionaly elevation of the reservoir, pump and mani-"- fold, and Fig. 8is a transverse sectionl through the manifold. v

In the form of the invention illustrated in Figs. 1 to G of thedrawings, inclusive. A is an oil reservoir, B is a suction pipethere- 'san o from to oil pump C driven by any suitable connection to motivepower or operated di lrect by steam pressure, C isan 'oillsupply..p'ipe, D isa sight feed lubricatorimanifold', il overflow return from'manil' told D to oilreservoir A. F, F,F2, F3 are lubricating servicepipes to engine cylinders or other parts under internal pressure towhich lubricant is to be served. G is an engine cylinder. H, H', H2 andH3 are regulater balance non return valves fitted close to delivery endsof service pipes F F? and Fs respectively, having their `supplyconnections led into valve chests, cylinder clearance, stalling boX orother engine parts as aforesaid.

in the lubricator manifold. D which vis shown in detail in Figs. 5 and6. the lubricator service pipes are connected each to the upper end ofseparate chamber therein; in the lower part of each of these chambers anipple l is fitted. Below this nipple in each v"by turning the capfVuntil the valve R l case is a stop cock K for controlling the' pipe islocated below the nipples, so that the oil is fed directly upwardv liefvalve E permits overplus of oil to retu'rn to the oil reservoir A. 'Infront of each of the chambers L is an aperture glazed` as shown at Pthrough which passage of oil upward in drops may be observed as in anordinary sight feed lubricator.- Plugs O are fitted in the upper endsofthe chambers L to facilitate access to the valves J or for cleaningpurposes.

The balance spring loaded service valves A variable re- H, H', H2 and H3are shown in detail construction in Figs'. 3 and 4. In these valves thechamber intermediately between the valve heads Q and'R is connected tothe cyll 'in der, tail rod case, or other parts as afore`l said. The

pressure of steam or gas act;`

l equally on the valve heads Q and R. The

theoiwfof steam past it, and the clearance tithe back is provided with aleak i1gh \vh ich any accidental steam fit'and so leave the valve freeto U' listhe loading spring, the pres- 'suiieofgwhich can be varied byturning the cap-,T which'vworks in a screwed socket W.

fYf'is'the oil-deliveryconnection from the sight ..feed'manifo'ldcorresponding to the pipe F,

The pressure of the spring U is adjusted ars onfitsfacewithjustsuiicient pressure to keepit efectively closed at themaximum;l

worlringvpressure in the engine part. When the4 pressure in theconnecting fpipe is suflicient to lift-thc valve against the spring Uthe Qverplus of oil is forced into the cylinderv or other part to belubricated, b ut'mmediately the ,pressure of oil in the'o'onnection Yis'relieved the valve closes automati- 'cally and lubricant ceases toflow. It is thus insured that the engine partswill be lubricated underconstant oil pressure irrespective of the internal working'pressures ofthe cylinder or other parts and that therefore the pipes are not robbedand the engine part is not overfed, 'underfed or fed with lubricantindiscriminately. E'ectivelubrication is thus insured and waste of oilavoided. i

The modification of the structure and the preferable arrangement of the'device is shown in Figs.' 7 and 8 of the drawings, the same involvingthe saine princi le. of. opera tion aslh'eretofore described. Xscompared with the arrangement shown in 5 and G of the drawings, in whichtbe oil ised to tbe trunk pipe M Vlocated at tbe bottom of the manifold,in the arrangement shown in Figs. 7 and 8 of the drawings tbeoil feedconnection is carried into the passage or trunk pipe M located in thetop of the manifold B with oil leads Y extending from each of a seriesof compartments L while a needle valve K is provided for controlling theflow of oil from the passage lvl through a series oi ducts into N 'andthe discharge nozzles or nipples, The outlets. are indicated byreference `character P liavinglvalvesQ in the form of spring seated ballvalves serving to permit the outlt of oil under pressure as heretoforedescribed. In this form of the invention tbe reservoir A is the same asshown in Fig'N l, as Well as the pump except that the oil overliowreturn is through the duct E, leading from one end of the passage ortrunk pipe M to the top of the manifold having communication With therespective chambers ai above described.

l do not limit myself to the precise detail or' construction shown inthese drawings, so long as the essential principle be maintained ci theinterposition of a balanced check valve with spring loading in each ofthe lubricating leadsclose up to the point of lubrication. The springloading of the valve must be adjusted at a point equal to or greaterthan the Working; pressure in the parts served with oil through tlievalve, and the oil feed pressure must exceed the valve loading pressure,the rate of flow of oil through the valve beingcontrolled Iby therelativepressures on the spring end and the oil feed end of the valve.

What I claim as my invention and desire to secure by Letters Patent iszl.. ln an engine lubricatingsysteni, a lubricator service pipe, avariable spring,F controlled. balanced valve interposed in tbelubricator service pipe close to the point of application oi'lubrication, said valve opening automatically against said spring' byoverplus of oil pressure in the service pipe against operating pressureand passingr a quantity of oil. determined by such pressure overplusindependent of vtbe operating;- pressure, A y

2., An engine lubricating system comprising an oil reservoir, an oilpump, a ma niiold havingr connection with the reservoir and pump,sci-vice pipes between the manifold and parts to be lubricated, and avariable springI loaded balanced valve located near tbv distant end ofeach oil service pipe and manifold. said against tbc maximum Working'pressure of tbc engine part. but adapted to bc opened by tbc saidpressure olil tbc oil to admit oil to the cugino parts.

valve being bold closedA 3. An engine lubricating system comprismg anoil reservoir, an oil pump, a sight -eed manifold, a cut-oil therefor, aconnection between the reservoir and manifold, a relief-valve in saidconnection to discharge overplus of oil toV said reservoir, servicepipes .leading from saidmanifeld and a variable spring loaded balancedvalve held under the pressure of tlie engine and located near thedist-ant end of eac-li service pipe, said valve being; normally closedbut opened by Superplus of oil pressure above the loading springpressure, whereby said spring will be compressed to permit the dischargeof oil.

from the respective service pipes into the parts to be lubricated.

4. An engine lubricating system comprising an oil reservoir, an oilpump, a sight feed manifold having an overflow pipe leading to thereservoir, a cut-oli' therefor, a variable relief valve in said overflowpipe to said reservoir, serviceA pipes leading from said manifold and avariable spring loaded balanced valve held under the pressure of theengine and located near the distant end of each service pipe, said valvebeing normallvclosed but opened oy Superplus-of oil pressure above tbeloading' spring?l pressure,v

said loadingV being adjusted in excess of tbc Workingpressure intheparts served through said valve. y

5. An engine lubricating'system, comprising oil supply means, means forforcing said oil under pressure, apart to be lubricated, said latterpart being under high steam oressure, connections between the suprllymeans l ing: oil supply'mcans, means for forcing said oil underpressure, a, part to be lubricated, said latter part being under big-listeam prossurc, connections between tbe supply means and tbe pa'rt to belubricated tbrouggli wbicli tbc oi! is `forced for discharging tbe sameinto said parts to bc lubricated, and means associated with saidconnections adjacent to tbe parts to be lubricated and rctaincdlby thepressure of tbe litter in a position to prevent tbe supply ot ilthereto, said means including' a variable sprinp loaded balance valveincluding.r a casing, a valve movable in said casing and having a beadadaptedy to seat against the oil pressure,H a piston on the valvebetween which and said head, said steam operates to normally hold thevalve in an inoperative position to prevent the passage of oil, meansnormally holding the head in a seated position and means for adjustingthe pressure of said spring, said head being; adapted to be unseated byeXoes sive pressure in the oil supply above the steam or Workingpressure of the parts to be l lubricated.

-In testimony whereof I have aixed my signature in resence of twoWitnesses.

ART UR GEORGE COOPER.

Witnesses:

W. I. DAVIS, HAROLD A: Romn,

